JP5142941B2 - Bonding method of elastic water stop plate - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a method for joining elastic water blocking plates, and provides seismic water resistance for elastic bodies such as vulcanized rubber for imparting seismic resistance to joints such as concrete structures constituting reservoirs and waterways, and water sealing. It is suitable for joining plates and the like at the construction site.

  In large concrete structures that make up reservoirs and clean water ponds that store water for domestic use and industrial use, etc., water supply and sewerage channels, etc. It is generally performed to provide a joint portion in advance and attach an earthquake resistant water stop plate made of an elastic material such as rubber for earthquake resistance and water stop.

  Such seismic waterproof plates are usually made at a certain length in the factory or for corners, and are joined to the joints of the concrete structure at the construction site to obtain the required length. It is made into the shape and shape, and it is made to attach to a joint part.

  As a method for joining the seismic waterproofing plate, for example, as disclosed in Patent Documents 1 and 2, a baking joining method using a joining die provided with a heater is widely adopted.

  In this baking and joining method, a dedicated joining mold that is divided into upper and lower parts corresponding to the cross-sectional shape of the seismic waterproofing plate and equipped with a heater is prepared, and the joining surfaces of the two waterproofing plates are joined respectively. After cutting into a plane or inclined surface suitable for the cutting, the cut surface is pretreated with a buff or a grinder, and rubber paste is applied to the joint surface and dried. Next, each bonding surface is pasted so as to be covered with an unvulcanized rubber sheet, and then set in a bonding mold and heated with two heaters for the earthquake-resistant water stop plate and pressed up and down to form each non-vulcanized rubber sheet. Vulcanized rubber sheets are vulcanized and baked together.

  However, such a baking joining method requires a dedicated joining die and, for example, a 200V power source for heating the heater, and bringing the joining die having a weight of about 50 kg into the field. It is necessary to secure power on site.

  In addition, there are usually a plurality of joining locations, and it is necessary to move the joining mold each time. Depending on the situation, a heavy joining die must be installed at a high place. Furthermore, a specialized and skilled worker is required for baking joining using a joining die. Further, the bonding takes 5 to 10 minutes as the drying time of the rubber paste, and 15 to 25 minutes for the baking and bonding, and it takes a considerable amount of time to join at one place when preparation work is included.

Therefore, as a joining method that replaces the baking joining method using such a joining die, as disclosed in Patent Document 3, after bonding the opposing joining surfaces of two objects to be joined to each other, pre-bonding is performed. Then, a cover sheet material is attached to cover the outside of the bonded surfaces of the bonded objects to be bonded, and a pair of fixing metal fittings that straddle the bonded surfaces of the bonded objects and face each other with the bonded objects interposed therebetween. It proposes a method of joining by arranging and fastening with a fastening member penetrating these pair of fixing fittings.
Japanese Patent Laid-Open No. 4-85431 JP-A-6-226859 JP 2007-85060 A

  According to the above-mentioned joining method, there is no need for a heavy dedicated joining mold or heater power source, and it is possible to easily join on-site using a simple jig even if it is not a skilled worker. However, the rigidity of the front and rear of the joint surface is increased by the fixing bracket because it crosses the joint surface and sandwiches the workpieces so that the fixing brackets face each other and the bolts and nuts are passed through and tightened. There are many materials used, and further improvements such as simplification of work processes are desired.

  The present invention has been made in view of the above-described prior art and demands, and does not require a heavy dedicated welding die or a power source for a heater, and even if it is not a skilled worker using a simple jig. , A method of joining elastic waterstops that reduces the materials used, simplifies the process, makes joining easier on site, requires less joining time, and has almost no difference in basic performance from other parts. It is something to be offered.

  According to a first aspect of the present invention for solving the problems of the prior art, there is provided a method for joining elastic water blocking plates according to the first aspect of the present invention, comprising: joining end faces of two joined bodies to be joined; After the pretreatment, a crimping jig capable of crimping the joint end faces is attached to the two joined bodies, and the two joined bodies are crimped and bonded together, straddling the joined surfaces of the joined bodies and bonding the joined bodies together. A plurality of holding plates opposed to each other are arranged, and these holding plates are fastened and fixed by a penetrating tightening member, and then the crimping jig is removed and cured on the front and back surfaces of the joined body outside the joining surface. It is characterized in that a member is pasted.

  According to a second aspect of the present invention, in addition to the structure of the first aspect, the bonded body includes a binder made of a soft rubber or a synthetic resin between the bonded end surfaces. It is characterized in that it is interposed and pressure-bonded and bonded.

  Furthermore, the joining method of the elastic water stop board of Claim 3 of this invention adds to the structure of Claim 1 or 2, and when the said to-be-joined body is equipped with a hollow part, the said hollow part is made from a back surface side. After the incision, an inner water-stop sheet was attached and bonded so as to straddle the joint surface inside the hollow part, and the back-surface water-stop sheet covering the incised part was adhered to the incised part on the back surface of the hollow part. It is characterized by this.

  According to a fourth aspect of the present invention, in addition to the structure according to any one of the first to third aspects, the crimping jig is applied to the outer shape of the joined body. It is characterized in that it is formed in a shape that follows and is attached to the object to be joined.

  According to the joining method of the elastic waterstop plate according to claim 1 of the present invention, after pre-treating the opposite joining end faces of the two joined bodies to be joined and the front and back surfaces of the joined bodies continuous thereto, A presser plate that attaches a crimping jig capable of crimping the joined end surfaces to two joined bodies and is bonded by crimping, straddling the joined surfaces of the joined bodies and sandwiching the joined bodies therebetween. A plurality of the pressing plates are fixed by tightening these presser plates with penetrating tightening members, and then the crimping jig is removed and the curing members are attached to the front and back surfaces of the joined bodies outside the joining surfaces. As a result, it can be easily joined on-site, and by placing multiple small presser plates, it can be connected and fixed with almost no difference in basic performance from the parts other than the joint, and the material used is reduced. And easy process It can be easily joined in the field turned into.

  This eliminates the need for a heavy dedicated joining mold or heater power source, and enables simple joining in a short time on site without using a simple jig.

  According to the elastic waterstop joining method according to claim 2 of the present invention, the joined body is pressure-bonded with a binder made of soft rubber or synthetic resin interposed between the joined end faces. Since it adhere | attaches, joining end surfaces can be adhere | attached still more reliably by interposing a binder.

  Furthermore, according to the method for joining elastic waterstop plates according to claim 3 of the present invention, when the joined body has a hollow portion, the hollow portion is cut out from the back side, and then the inner side of the hollow portion. The inner waterproof sheet is attached and bonded so as to straddle the bonding surface, and the back water blocking sheet that closes the incised part is bonded to the incised part on the back surface of the hollow part. Even in the case of providing, there is almost no difference in basic performance from the portion other than the joint portion with the inner water-stop sheet that straddles the joint surface inside the hollow portion, and the material can be joined in the field while suppressing the amount of use.

  According to the elastic waterstop joining method according to claim 4 of the present invention, the crimping jig is formed in a shape along the outer shape of the joined body and attached to the joined body. As a result, the crimping jig can be brought into close contact with the front and back surfaces of the object to be joined, so that a uniform crimping force can be applied to the joining end face, and the joining work can be performed more firmly and efficiently in a short time. be able to.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIGS. 1 to 4 are process explanatory views according to an embodiment in which the joining method of the elastic water stop plate of the present invention is applied to the joining of the water stop plate for earthquake resistance, and FIG. FIG. 2 is a plan view of a joining completed state, FIG. 3 is a plan view and a sectional view of a joining state by a crimping jig, and FIG. 4 is a joint preparation inside a hollow portion. It is explanatory drawing of the half cut state of a state. FIGS. 5 and 6 are related to the case where the binder is interposed between the joining end faces. FIG. 5 is a cross-sectional view of the joining end face in the joined state and its AA sectional view, and FIG. It is a top view of a joining completion state.

  This elastic water stop plate joining method (hereinafter simply referred to as “joining method”) is an earthquake resistant water stop plate 10 having a cross-sectional shape as shown in FIG. (Hereinafter simply referred to as the water stop plate 10) is used when joining at the installation site.

The water stop plate 10 to be joined includes, for example, a hollow center valve 11 having a substantially diamond-shaped cross section at the center, and two protrusions on both sides of the plate-like portion protruding on both sides thereof. The side valve 12 is formed. The center valve 11 is formed hollow with a main portion 11a having a large protrusion amount on the front surface side and a sub main portion 11b having a small protrusion amount on the back surface side.
In addition, the water stop board 10 used as object is not restricted to this shape, The thing without a hollow part may be sufficient.

(1) The joining method of such a water stop board 10 adjusts the dimension of the two water stop boards 10 and 10 which are to-be-joined bodies, Then, each edge part is cut | disconnected and the joining end surface 10a is formed. Then, in order to finish the joining end surface 10a necessary for adhesion and the front and back surfaces of the water stop plate 10 continuous therewith, pretreatment is performed by polishing with a router, buff, grinder or the like. At this time, when the water stop plates 10 and 10 include a hollow portion such as the center valve 11, the inner side of the center valve 11 is also polished and subjected to pretreatment for adhesion.
In this pretreatment, for example, the entire surface of the joining end surface 10a and the front and back surfaces of the ridges adjacent to both sides of the center valve 11 are polished.

  (2) Next, the bolt holes 13 penetrating vertically are formed in the two water blocking plates 10 and 10 respectively. Here, a total of two bolt holes 13 are formed between the two protrusions of the side valve 12 of one water stop plate 10, respectively (see FIG. 2).

(3) When the binder 14 is joined between the joining end faces, as shown in FIGS. 5 and 6, a binder 14 such as vulcanized rubber formed according to the cross-sectional shape of the water stop plate 10 is used. As with the water stop plate 10, the pretreatment is performed by polishing the joint end surfaces on both sides to be the joint surfaces and the front and back surfaces up to the ridge adjacent to the center valve 11.
If no binder is interposed, this step is omitted and the next step is performed.

(4) Next, as shown in FIG. 3, the crimping jig 15 is placed at a predetermined position (position where there is no hindrance to the work in the subsequent process) from the joint end face 10 a of each water stop plate 10, 10. It is mounted so as to be sandwiched from the front and back sides, and is attached by tightening with mounting bolts and nuts 15c outside the water blocking plates 10 and 10.
The crimping jig 15 includes two front surface members 15a and 15a corresponding to the surface shape of the waterstop plate 10 and two back surface members 15b and 15b corresponding to the back surface shape. Fastened with 15c and fixed to both ends of the back surface members 15b and 15b so that the front surface member 15a and the back surface member 15b attached to the water blocking plates 10 and 10 are attracted to each other. Two crimping bolts and nuts 15d for crimping the end faces are provided.
The front surface members 15a and 15a and the back surface members 15b and 15b of the crimping jig 15 are attached with mounting bolts and nuts 15c at positions adjacent to the joining end surfaces 10a and 10a of the two water blocking plates 10 and 10. After that, the joint end faces 10a and 10a subjected to the pretreatment to be joined and the front and back surfaces adjacent thereto are cleaned and degreased, and an adhesive is applied to the joint end faces 10a and 10a.
As shown in FIG. 5 and FIG. 6, when the binder 14 is interposed, after cleaning and degreasing the joint end faces on both sides of the binder 14, an adhesive is applied to the joint end faces.
The adhesive may be appropriately selected depending on the material of the water stop plate 10, and for example, a jelly instant adhesive is used.

(5) After applying the adhesive to the joining end faces in this way, the axial force is applied so that the joining end faces 10a, 10a are crimped by operating the crimping bolts 15d of the crimping jig 15, and the water stop plates 10, 10 The joining end faces 10a and 10a (when the binder 14 is interposed, the binder 14 and the joining end faces 10a and 10a) are brought into a completely bonded state.
After the bonding of the joining end faces 10a and 10a of the water blocking plates 10 and 10 is completed, the bolt holes are formed so as to straddle the joining surface 10b and to form the presser plates 16 on the front and back surfaces of the water stopping plate 10 as shown in FIG. The water stop plates 10 and 10 are mechanically connected and fixed by tightening with bolts and nuts 16a which are fastening members penetrating the water stop plate 10.

(6) Thereafter, the mounting bolts / nuts 15c are loosened, the crimping jig 15 is removed, and a curing member such as a sheet-like rubber is provided on the front and back surfaces of the joint surfaces 10b of the two water blocking plates 10, 10. A cover sheet material 17 is pasted so as to be covered with a front cover sheet 17a and a back cover sheet 17b.
In addition, when the hollow part 11 is provided like this water stop board 10, the process inside a hollow part is performed as follows before sticking of the cover sheet material 17. FIG.

(6-1) First, a cut is made in the center of the sub-main part 11b on the back surface side of the water blocking plates 10 and 10 at a right angle to the joint surface 10b, and a cut is made at both ends of the cut parallel to the joint surface 10b. After the incision is made in a horizontal H shape, the incised state is maintained using an L-shaped clamp 18 as shown in FIG.
(6-2) And, as shown in FIG. 1, an inner water stop sheet 19 such as a sheet-like rubber is adhered to the entire inside of the hollow portions on both sides sandwiching the joint surfaces of the water stop plates 10 and 10, and Press contact with a roll.
(6-3) Furthermore, the auxiliary inner waterproof sheet 20 is bonded only to the inner side of the main part 11a so as to cover the respective end portions of the inner waterproof sheet 19.
(6-4) After removing the L-shaped clamp 18 that has maintained the incision state of the sub-main part 11b of the hollow part 11 and applying and bonding an adhesive to the incised part, the part is covered. The back cover sheet 17b, which is a curing member, is adhered.
When the hollow portion 11 is thus provided in the water stop plate 10, after the curing of the sub main portion 11 b on the inner side and the back surface of the hollow portion 11 is completed, the surface of the hollow portion 11 is described in the step (6) above. The front cover sheet 17a which is the cover sheet material 17 which is a curing member is adhered, and the joining of the water blocking plates 10 and 10 is completed.

  According to this joining method, the opposite end surfaces 10a and 10a of the water stop plates 10 and 10 which are two joined bodies to be joined and the front and rear surfaces of the water stop plates 10 and 10 which are joined bodies continuous thereto. After the pre-treatment, a crimping jig 15 capable of crimping the joining end faces 10 and 10a is attached to the two joined bodies by attaching bolts and nuts 15c and crimping the bolts and nuts 15d. A plurality of presser plates 16 that are placed across the joint surfaces 10b of the water stop plates 10 and 10 that are the objects to be joined and that are opposed to each other with the water stop plates 10 and 10 that are the objects to be joined interposed therebetween, After tightening and fixing these presser plates 16 with bolts and nuts 16a that are penetrating fastening members, the front and rear surfaces of the water stop plates 10 and 10 that are the joined bodies outside the joint surface are removed by removing the crimping jig 15. It is a curing component Since the front cover sheet 17a and the back cover sheet 17b of the bar sheet material 17 are affixed, they can be easily joined in the field, and by arranging a plurality of small presser plates 16, it is possible to It can be connected and fixed with almost no difference in basic performance such as flexibility and waterstop of the joint.

  In addition, the materials used for bonding are only the adhesive and the front cover sheet 17a and the back cover sheet 17b, which are the curing members on the front and back surfaces, and the materials used can be reduced, and the process is also compared with the baking bonding method. And can be easily joined on site.

  This eliminates the need for a heavy dedicated joining mold or heater power source, and enables simple joining in a short time on site without using a simple jig.

  Further, in this joining method, the water stop plates 10 and 10 that are to be joined are bonded by being bonded with a binder 14 made of soft rubber or synthetic resin between the joining end faces 10a and 10a. Then, by interposing the binder 14, the joining end faces 10a and 10a can be more reliably brought into close contact with each other by soft rubber or the like than in the case of the joining end faces 10a and 10a, thereby increasing the joining strength. be able to.

  Furthermore, in this joining method, when the water stop plate 10 that is the joined body includes the hollow portion 11, after the hollow portion 11 is cut from the back surface side, the joining surface 10 b inside the main portion 11 a of the hollow portion 11 is formed. Further, the inner waterproof sheet 19 is attached and adhered so that the back cover sheet 17b, which is the rear waterproof sheet that closes the incised part, is adhered to the incised part of the rear surface of the hollow part 11. Even when a certain water stop plate 10 includes the hollow portion 11, the inner water stop sheet 19 (and the auxiliary inner water stop sheet 20) straddling the joint surface inside the hollow portion 11 is flexible with a portion other than the joint portion. It can be joined in the field with almost no difference in basic performance such as waterstop. Moreover, even in the case of the water stop plate 10 having the hollow portion 11, it is only necessary to use the inner water stop sheet 19 or the auxiliary inner water stop sheet 20, and it is possible to perform bonding while suppressing the amount of material prepared for bonding. .

  Moreover, according to this joining method, the crimping jig 15 is formed in a shape along the outer shape of the waterstop plate 10 that is the joined body, and is attached to the waterstop plates 10 and 10 that are the joined bodies. Therefore, the crimping jig 15 is fastened with the mounting bolts and nuts 15c outside the water blocking plates 10 and 10 without using bolts and nuts or the like that pass through the water blocking plates 10 and 10 that are the joined bodies. In this way, it can be brought into close contact with the front and back surfaces of the water blocking plates 10 and 10 and a uniform crimping force can be applied to the joining end faces 10a and 10a with the crimping bolts and nuts 15d, and the joining operation can be performed efficiently in a short time. And can be joined uniformly and firmly.

  Moreover, what is necessary is just to join using the crimping | compression-bonding jig | tool 15 and the presser plate 16, and no skill is required for joining, and anyone can join easily.

In the above-described embodiment, two presser plates are used for connecting and fixing the water stop plates. However, the number of connecting and fixing sites may be further increased, and tightening of bolts and nuts per one location The number of members may be increased.
Further, the shape of the presser plate is not limited to a flat plate, and may be other shapes such as a corrugated shape like the presser plate 16A shown in FIG.

It is process explanatory drawing concerning one Embodiment which applied the joining method of the elastic water stop board of this invention to joining of the water stop board for earthquake resistance, the cross-sectional view in the joining end surface of a joining completion state, and its AA sectional drawing It is. It is process explanatory drawing concerning one Embodiment which applied the joining method of the elastic water stop board of this invention to joining of the water stop board for earthquake resistance, and is a top view of a joining completion state. It is process explanatory drawing concerning one Embodiment which applied the joining method of the elastic water stop board of this invention to joining of the water stop board for earthquake resistance, and is the top view and sectional drawing of the joining state by the jig | tool for crimping | compression-bonding. It is process explanatory drawing concerning one Embodiment which applied the joining method of the elastic water stop board of this invention to joining of the water stop board for earthquake resistances, and is explanatory drawing of the half cut state of the joining preparation state inside a hollow part. It is process explanatory drawing concerning other one embodiment which applied the joining method of the elastic waterproofing board of this invention to joining of the waterproofing board for earthquake resistance, and the completion of joining in the case of joining via a binder between joined end faces It is the cross-sectional view in the joining end surface of a state, and its AA sectional drawing. It is process explanatory drawing concerning other one Embodiment which applied the joining method of the elastic water stop board of this invention to joining of the water stop board for earthquake resistance, and is a top view of a joining completion state. It is an end elevation of the joint completion state concerning other one embodiment which applied the joining method of the elastic waterproofing board of this invention to joining of the waterproofing board for earthquake resistances.

Explanation of symbols

10 Water stop plate (Waterproof plate for earthquake resistance)
10a Joining end face 10b Joining face 11 Center valve 11a Main part 11b Sub-main part 12 Side valve 13 Bolt hole 14 Binder 15 Crimping jig 15a Surface member 15b Back member 15c Mounting bolt / nut 15d Crimping bolt / nut 16 Presser plate 16a Bolt / nut 17 Cover sheet material 17a Front cover sheet 17b Back cover sheet 18 L-type clamp 19 Inner waterproof sheet 20 Auxiliary inner waterproof sheet

Claims (4)

After pre-processing the opposite joining end surfaces of the two joined bodies to be joined and the front and back surfaces of the joined bodies that are continuous to the joined end faces,
Attaching a crimping jig capable of crimping the joining end surfaces to the two bodies to be joined, and bonding them by crimping,
After placing a plurality of pressing plates facing each other across the bonding surfaces of the objects to be bonded and sandwiching the objects to be bonded, these pressing plates are connected and fixed by tightening with a fastening member that penetrates.
A method for joining elastic waterstops, wherein the crimping jig is removed and a curing member is attached to the front and back surfaces of the joined body outside the joining surface.   2. The elastic water stop plate according to claim 1, wherein a binder made of soft rubber or synthetic resin is interposed between the bonding end faces and bonded to the bonded body. Method.   When the object to be joined has a hollow part, after incising the hollow part from the back side, the inner waterproof sheet is attached and bonded so as to straddle the joining surface inside the hollow part, and the hollow part 3. The method for joining an elastic water blocking plate according to claim 1, wherein a back water blocking sheet for closing the cut portion is adhered to the cut portion on the back surface.   The elastic water stop plate according to any one of claims 1 to 3, wherein the crimping jig is formed in a shape along an outer shape of the joined body and is attached to the joined body. Joining method.

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